One method of purification of molten salt involves oxidation. An important aspect of the purification process is the rising velocity of oxygen bubbles in the molten salt. An experiment was conducted in which oxygen was inserted(at a designated spargingrate) into molten salt and photographic images of the bubbles taken. A random sample of 25 images yielded the data on bubble velocity(measured in meters persecond) shown in the accompanying table.

0.274

0.268

0.209

0.267

0.268

0.313

0.286

0.316

0.222

0.256

0.253

0.333

0.212

0.177

0.219

0.309

0.264

0.318

0.292

0.168

0.343

0.275

0.265

0.227

0.221